Author Topic: Tip!  (Read 3686 times)

2013-03-24, 07:09:44

Polymax

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Hi all!
Discovered an interesting thing, if the diffuse map to use a bitmap with obvious noise, the smoothing error occurs.
To avoid this, use "Summed Area" filter in the bitmap parameters.
Corona - the best rendering solution!

2013-03-24, 12:01:40
Reply #1

lacilaci

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The whole filtering in corona is somehow weird... I don't know maybe it's just me but it feels somehow wrong, I'm pretty busy right now so can't do a proper tests but image filtering, texture filtering and when it comes to bump mapping it's all just weird... Anyone experiencing some stuff like that compared to other renderers?? Or am I seeing stuff? :D LOL

2013-03-24, 16:22:49
Reply #2

Chakib

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Hi all!
Discovered an interesting thing, if the diffuse map to use a bitmap with obvious noise, the smoothing error occurs.
To avoid this, use "Summed Area" filter in the bitmap parameters.

i've read if you use the summed area filter your render time will double, so it's not a big deal.

2013-03-24, 16:28:13
Reply #3

Polymax

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[i've read if you use the summed area filter your render time will double, so it's not a big deal.
My tests have shown, this is a wrong statement:
http://corona-renderer.com/forum/index.php/topic,316.msg4726.html#new
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2013-03-24, 16:36:04
Reply #4

Chakib

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[i've read if you use the summed area filter your render time will double, so it's not a big deal.
My tests have shown, this is a wrong statement:
http://corona-renderer.com/forum/index.php/topic,316.msg4726.html#new

will test it also, this is weird because the other guy did also a test and the differente is huge.

Anyway thanks for the tip !

2013-03-24, 18:39:00
Reply #5

kumodot

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Summed area seems (to me ) to have a bigger impact on the REnderTime using Scanline and Mentalray, but the textures looks better.
 
   The first thing i´ve learned using Corona is to put Blur texture filtering on ZERO and check summed Area. It solved all my problems with textures. I didn´t notice a great impact on render time... I am not sure.
« Last Edit: 2013-03-24, 19:16:29 by kumodot »
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2013-03-24, 19:06:02
Reply #6

Ondra

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spoiler alert: in time I'll implement my own bitmap texture with an optimized sampling/filtering, the max one is always slow.
Rendering is magic.
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2013-03-24, 19:45:27
Reply #7

maru

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